Track every dose.
Spot what works.
Peptide Stack is the iPhone app for serious peptide users. Log doses on a schedule, journal photos and body data, explore a 100+ compound library, and get AI-powered analysis of your protocol. Your data is yours, synced privately through iCloud.
Free to download. Premium features start at $4.99/week. iCloud sync built in. No account required.
Six tabs. One workflow.
Built for the way you actually run a protocol.
Peptide Stack pairs disciplined tracking with an AI second opinion. Everything you log lives on your device, syncs through your iCloud, and stays out of anyone else's database.
Today
Every dose, on time
Wake up to today's schedule. Tap to log a dose, snooze, or skip. Local notifications keep you honest.
Journal
Photos, body data, notes
Markdown journal with photo attachments, weight, sleep, mood. Side-by-side comparisons over time.
Library
100+ compounds, demystified
Curated reference for BPC-157, TB-500, GHK-Cu, Semaglutide, Tirzepatide and more. Mechanism, half-life, common protocols.
Calculator
Reconstitution math, solved
Vial size, BAC water, target dose. The calculator hands you the exact insulin-syringe units to draw.
AI Analysis
Read your protocol like a coach
Claude reviews your stack against your log. Surfaces synergies, conflicts, and what to try next. Premium.
Calendar
Months at a glance
Dots for logged doses, journals, weight check-ins. Tap any day to scrub back through your timeline.
Pricing
One free download. Premium when you're ready.
Track doses, journal, and use the calculator for free. Unlock AI analysis and the full compound library with any premium tier. All purchases are managed by Apple.
Weekly
Try premium for the cost of a coffee.
$4.99
USD
per week
- Unlimited stacks and dose logs
- Full journal with photos and biomarkers
- Reconstitution calculator
- Compound library (100+ peptides)
- Cancel anytime in App Store
Subscription managed by Apple. Cancel anytime.
Yearly Platinum
For serious users. Best value, full access.
$29.99
USD
per year
- Everything in Weekly
- AI protocol analysis (Claude)
- Synergy and conflict detection
- Saves 88% vs weekly
- Founders pricing while it lasts
Subscription managed by Apple. Cancel anytime.
Prices shown in USD. Apple may localize prices in your region. Family Sharing is supported on yearly subscriptions.
FAQ
Questions, answered honestly.
Still curious? Send us a note and we'll get back to you within two business days.
Email supportNo. Peptide Stack is a tracking and analysis tool, not a pharmacy or a research-chemical vendor. We do not sell, source, or recommend suppliers. Acquire compounds through legal channels in your jurisdiction.
Yes. Everything you log lives on your device and syncs only through your personal iCloud account. We do not run a backend database of user logs. No account is required to use the app.
AI analysis sends your stack and recent log entries to Anthropic to generate insights. That request is anonymous and not stored on our servers.
Dose logging, the journal, the reconstitution calculator, the monthly calendar view, and a preview of the compound library are all free. AI protocol analysis and the full compound library require a premium subscription.
We pass your active stack, schedule, recent doses, weight trend, and journal notes to Claude (Anthropic). It returns a structured review: what looks synergistic, what looks like a conflict, and suggested adjustments. It is not medical advice. Treat it as a coach reading your notebook.
All purchases are managed by Apple. Refund requests go through reportaproblem.apple.com. Apple typically honors reasonable refund requests within 14 days of purchase, but the final decision is theirs.
Yes, through your iCloud account. Sign in to the same Apple ID on both devices and your stack, journal, and history follow you. The app will fall back to a local-only store if iCloud is unavailable.
Not yet. Peptide Stack is currently iOS-only (iPhone and iPad, iOS 17+). An Android version is on the roadmap.
We read every message and reply within two business days.
Email support
Ready to run a smarter protocol?
Download Peptide Stack, set up your stack in two minutes, and let the data speak. Free to try. Premium when you need the deeper analysis.
iPhone & iPad. iOS 17+. iCloud sync. No account required.